{"id":"F2006B04511","name":"AD/BELL 206/56 Amdt 1 - Starter Generator Retaining Clamp T Bolt - Inspection","slug":"ad-bell-206-56-amdt-1-starter-generator-retaining-clamp-t-bolt-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":114214,"registerId":"commonwealth-F2006B04511-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BELL 206/56 Amdt 1 - Starter Generator Retaining Clamp T Bolt - Inspection","content":"---\nmeta-content-style-type: text/css\nmeta-content-type: application/xhtml+xml; charset=utf-8\nmeta-generator: Aspose.Words for .NET 22.10.0\n---\n\n?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"no\"?>\n\nCOMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n \n\nBell Helicopter Textron Canada (BHTC) 206 and Agusta Bell 206 Series Helicopters\n\n \n\nAD/BELL 206/56\n\nAmdt 1\n\n\nStarter Generator Retaining Clamp ‘T’ Bolt - Inspection\n\n\n12/73\n\n \n\nApplicability: All models prior to S/No. 1234. Document: Bell SB No. 206-03-73-1, Rev. A.\n\nNote: Agusta SB No. BT206-74 refers.\n\n \n\nCompliance: Initial inspection within 10 hours time in service and thereafter inspect prior to each flight where the engine is shut down until the modified bolt is fitted.\n\n \n\nNote: The repetitive inspection may be performed by the pilot.\n\n \n\nBackground: AD/Agusta 206/43A equivalent.\n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1391},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This remains a narrow, targeted safety directive addressing a specific mechanical defect in defined aircraft models. The scope is strictly limited to inspection requirements for the starter generator retaining clamp T-bolt without expansion into broader airworthiness or operational domains."},"complexity_factors":["Single mechanical component targeted (one bolt type)","Simple binary applicability test (serial number threshold)","Only two compliance conditions (initial 10-hour check and repetitive pre-flight checks)","Minimal cross-referencing (only to specific manufacturer service bulletins)","No nested exceptions or conditional logic"],"plain_english_summary":"This directive mandates safety inspections for a specific bolt on certain Bell 206 helicopters to prevent mechanical failure.\n\n**What it requires:**\n- **Target aircraft:** Bell 206 and Agusta Bell 206 helicopters with serial numbers below 1234.\n- **The problem:** The \"T\" bolt on the starter generator retaining clamp requires checking due to safety concerns.\n- **Inspection schedule:** \n  - First inspection within 10 hours of flying time.\n  - Then, check it before every flight where the engine will be shut down.\n  - Continue these checks until a modified (fixed) bolt is installed.\n- **Who can inspect:** Pilots are allowed to perform the repetitive pre-flight checks themselves—they don't need a mechanic for these ongoing inspections.\n\n**Why it matters:** A faulty retaining clamp bolt could lead to starter generator failure, potentially causing power loss or in-flight emergencies."}},"importantCases":[],"_links":{"self":"/api/acts/ad-bell-206-56-amdt-1-starter-generator-retaining-clamp-t-bolt-inspection","history":"/api/acts/ad-bell-206-56-amdt-1-starter-generator-retaining-clamp-t-bolt-inspection/history","analysis":"/api/acts/ad-bell-206-56-amdt-1-starter-generator-retaining-clamp-t-bolt-inspection/analysis","conflicts":"/api/acts/ad-bell-206-56-amdt-1-starter-generator-retaining-clamp-t-bolt-inspection/conflicts","importantCases":"/api/acts/ad-bell-206-56-amdt-1-starter-generator-retaining-clamp-t-bolt-inspection/important-cases","documents":"/api/acts/ad-bell-206-56-amdt-1-starter-generator-retaining-clamp-t-bolt-inspection/documents"}}